Spring Boot - org.springframework.beans.factory.BeanCreationException：使用名称创建 bean 时出错

Posted 2023-02-26

【中文标题】Spring Boot - org.springframework.beans.factory.BeanCreationException：使用名称创建 bean 时出错

【英文标题】：Spring Boot - org.springframework.beans.factory.BeanCreationException: Error creating bean with name

【发布时间】：2017-04-17 23:35:17

【问题描述】：

我是 Spring Boot 的新手。我尝试将 mysql db 与 hibernate 连接，但是当我命令时出现此错误

mvn spring-boot:run

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [com/autkusoytas/configuration/DatabaseConfig.class]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: org/dom4j/DocumentException
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:736)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)

Caused by: java.lang.NoClassDefFoundError: org/dom4j/DocumentException
    at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:343)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1633)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570)
    ... 15 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.dom4j.DocumentException
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 18 common frames omitted

我的 pom.xml 在这里：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>com.autkusoytas</groupId>
<artifactId>Demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>

<name>Iyzico</name>
<description>Demo project for Spring Boot</description>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.2.3.RELEASE</version>
</parent>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency>
    <dependency>
        <groupId>dom4j</groupId>
        <artifactId>dom4j</artifactId>
        <version>1.6.1</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

DatabaseConfig 在这里：

package com.autkusoytas.configuration;

import java.util.Properties;

import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.hibernate4.LocalSessionFactoryBean;
import org.springframework.orm.hibernate4.HibernateTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@EnableTransactionManagement
public class DatabaseConfig 

@Value("$db.driver")
private String DB_DRIVER;

@Value("$db.password")
private String DB_PASSWORD;

@Value("$db.url")
private String DB_URL;

@Value("$db.username")
private String DB_USERNAME;

@Value("$hibernate.dialect")
private String HIBERNATE_DIALECT;

@Value("$hibernate.show_sql")
private String HIBERNATE_SHOW_SQL;

@Value("$hibernate.hbm2ddl.auto")
private String HIBERNATE_HBM2DDL_AUTO;

@Value("$entitymanager.packagesToScan")
private String ENTITYMANAGER_PACKAGES_TO_SCAN;

@Bean
public DataSource dataSource() 
    DriverManagerDataSource dataSource = new DriverManagerDataSource();
    dataSource.setDriverClassName(DB_DRIVER);
    dataSource.setUrl(DB_URL);
    dataSource.setUsername(DB_USERNAME);
    dataSource.setPassword(DB_PASSWORD);
    return dataSource;


@Bean
public LocalSessionFactoryBean sessionFactory() 
    LocalSessionFactoryBean sessionFactoryBean = new LocalSessionFactoryBean();
    sessionFactoryBean.setDataSource(dataSource());
    sessionFactoryBean.setPackagesToScan(ENTITYMANAGER_PACKAGES_TO_SCAN);
    Properties hibernateProperties = new Properties();
    hibernateProperties.put("hibernate.dialect", HIBERNATE_DIALECT);
    hibernateProperties.put("hibernate.show_sql", HIBERNATE_SHOW_SQL);
    hibernateProperties.put("hibernate.hbm2ddl.auto", HIBERNATE_HBM2DDL_AUTO);
    sessionFactoryBean.setHibernateProperties(hibernateProperties);

    return sessionFactoryBean;


@Bean
public HibernateTransactionManager transactionManager() 
    HibernateTransactionManager transactionManager = new HibernateTransactionManager();
    transactionManager.setSessionFactory(sessionFactory().getObject());
    return transactionManager;


 // class DatabaseConfig

而且我也在使用这样的 application.properties：

db.driver: com.mysql.jdbc.Driver db.url:jdbc:mysql://localhost:3306/test db.username:root 数据库密码：

hibernate.dialect：org.hibernate.dialect.MySQL5Dialect hibernate.show_sql: 真 hibernate.hbm2ddl.auto：更新 entitymanager.packagesToScan: com.autkusoytas

WEB-INF/库： 感谢您的帮助。

【问题讨论】：

要解决 ClassNotFoundException 和 NoClassDefFoundError 等问题，您应该首先检查异常堆栈。它清楚地表明您缺少一些库。

我已经尝试添加 dom4j 库，但没有成功。

@Utku 好的，但请确保它在类路径中。我在你的 pom.xml 文件中看不到 dom4j 依赖项

是的，我知道。我以前做过，但没有用。当我将 dom4j 依赖项添加到 pom.xml 时，我得到完全相同的错误。

@RohitGaikwad，我更新了问题

【参考方案1】：

错误信息很清楚：Caused by: java.lang.ClassNotFoundException: org.dom4j.DocumentException

在 POM 依赖项中添加dom4j

<dependency>
    <groupId>dom4j</groupId>
    <artifactId>dom4j</artifactId>
    <version>1.6.1</version>
</dependency>

【参考方案2】：

从http://www.java2s.com/Code/Jar/d/Downloaddom4j16jar.htm下载dom4j的jar文件

在这里，您可以在此站点上看到解决此问题所需的 DocumentException 类。

【讨论】：

是的。我尝试手动将 jar 添加到 BuildBath 并完成。谢谢。